diff -r 451104c223e2 -r e534c4c32d54 src/HOL/AxClasses/Lattice/LatInsts.ML
--- a/src/HOL/AxClasses/Lattice/LatInsts.ML	Wed Nov 05 13:14:15 1997 +0100
+++ b/src/HOL/AxClasses/Lattice/LatInsts.ML	Wed Nov 05 13:23:46 1997 +0100
@@ -3,15 +3,15 @@
 
 
 goal thy "Inf {x, y} = x && y";
-  br (Inf_uniq RS mp) 1;
+  by (rtac (Inf_uniq RS mp) 1);
   by (stac bin_is_Inf_eq 1);
-  br inf_is_inf 1;
+  by (rtac inf_is_inf 1);
 qed "bin_Inf_eq";
 
 goal thy "Sup {x, y} = x || y";
-  br (Sup_uniq RS mp) 1;
+  by (rtac (Sup_uniq RS mp) 1);
   by (stac bin_is_Sup_eq 1);
-  br sup_is_sup 1;
+  by (rtac sup_is_sup 1);
 qed "bin_Sup_eq";
 
 
@@ -19,39 +19,39 @@
 (* Unions and limits *)
 
 goal thy "Inf (A Un B) = Inf A && Inf B";
-  br (Inf_uniq RS mp) 1;
+  by (rtac (Inf_uniq RS mp) 1);
   by (rewtac is_Inf_def);
-  by (safe_tac (claset()));
+  by Safe_tac;
 
-  br (conjI RS (le_trans RS mp)) 1;
-  br inf_lb1 1;
-  be Inf_lb 1;
+  by (rtac (conjI RS (le_trans RS mp)) 1);
+  by (rtac inf_lb1 1);
+  by (etac Inf_lb 1);
 
-  br (conjI RS (le_trans RS mp)) 1;
-  br inf_lb2 1;
-  be Inf_lb 1;
+  by (rtac (conjI RS (le_trans RS mp)) 1);
+  by (rtac inf_lb2 1);
+  by (etac Inf_lb 1);
 
   by (stac le_inf_eq 1);
-  br conjI 1;
-  br Inf_ub_lbs 1;
+  by (rtac conjI 1);
+  by (rtac Inf_ub_lbs 1);
   by (Fast_tac 1);
-  br Inf_ub_lbs 1;
+  by (rtac Inf_ub_lbs 1);
   by (Fast_tac 1);
 qed "Inf_Un_eq";
 
 goal thy "Inf (UN i:A. B i) = Inf {Inf (B i) |i. i:A}";
-  br (Inf_uniq RS mp) 1;
+  by (rtac (Inf_uniq RS mp) 1);
   by (rewtac is_Inf_def);
-  by (safe_tac (claset()));
+  by Safe_tac;
   (*level 3*)
-  br (conjI RS (le_trans RS mp)) 1;
-  be Inf_lb 2;
-  br (sing_Inf_eq RS subst) 1;
-  br (Inf_subset_antimon RS mp) 1;
+  by (rtac (conjI RS (le_trans RS mp)) 1);
+  by (etac Inf_lb 2);
+  by (rtac (sing_Inf_eq RS subst) 1);
+  by (rtac (Inf_subset_antimon RS mp) 1);
   by (Fast_tac 1);
   (*level 8*)
   by (stac le_Inf_eq 1);
-  by (safe_tac (claset()));
+  by Safe_tac;
   by (stac le_Inf_eq 1);
   by (Fast_tac 1);
 qed "Inf_UN_eq";
@@ -59,40 +59,40 @@
 
 
 goal thy "Sup (A Un B) = Sup A || Sup B";
-  br (Sup_uniq RS mp) 1;
+  by (rtac (Sup_uniq RS mp) 1);
   by (rewtac is_Sup_def);
-  by (safe_tac (claset()));
+  by Safe_tac;
 
-  br (conjI RS (le_trans RS mp)) 1;
-  be Sup_ub 1;
-  br sup_ub1 1;
+  by (rtac (conjI RS (le_trans RS mp)) 1);
+  by (etac Sup_ub 1);
+  by (rtac sup_ub1 1);
 
-  br (conjI RS (le_trans RS mp)) 1;
-  be Sup_ub 1;
-  br sup_ub2 1;
+  by (rtac (conjI RS (le_trans RS mp)) 1);
+  by (etac Sup_ub 1);
+  by (rtac sup_ub2 1);
 
   by (stac ge_sup_eq 1);
-  br conjI 1;
-  br Sup_lb_ubs 1;
+  by (rtac conjI 1);
+  by (rtac Sup_lb_ubs 1);
   by (Fast_tac 1);
-  br Sup_lb_ubs 1;
+  by (rtac Sup_lb_ubs 1);
   by (Fast_tac 1);
 qed "Sup_Un_eq";
 
 goal thy "Sup (UN i:A. B i) = Sup {Sup (B i) |i. i:A}";
-  br (Sup_uniq RS mp) 1;
+  by (rtac (Sup_uniq RS mp) 1);
   by (rewtac is_Sup_def);
-  by (safe_tac (claset()));
+  by Safe_tac;
   (*level 3*)
-  br (conjI RS (le_trans RS mp)) 1;
-  be Sup_ub 1;
-  br (sing_Sup_eq RS subst) 1;
+  by (rtac (conjI RS (le_trans RS mp)) 1);
+  by (etac Sup_ub 1);
+  by (rtac (sing_Sup_eq RS subst) 1);
   back();
-  br (Sup_subset_mon RS mp) 1;
+  by (rtac (Sup_subset_mon RS mp) 1);
   by (Fast_tac 1);
   (*level 8*)
   by (stac ge_Sup_eq 1);
-  by (safe_tac (claset()));
+  by Safe_tac;
   by (stac ge_Sup_eq 1);
   by (Fast_tac 1);
 qed "Sup_UN_eq";